Waves and Oscillation waves transport _ along a medium without transporting .

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Presentation transcript:

Waves and Oscillation waves transport _________ along a medium without transporting ________

Types of Waves _______________ Waves _________________Waves

Anatomy of a wave _______________: the highest point a wave reaches. The lowest point is called its trough. _______________: the vertical distance in meters from a wave’s crest to its trough. _______________: the horizontal distance between two successive crests, often measured in meters.

Amplitude: _____________________ _______________________________. the displacement of the medium from zero or the height of a wave crest or trough from a zero point. In the BOSS activity it’s how far to the _________________ _________________. http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/waves/u10l2a.html

Period:____________________________________________ __________________________________________________.

Oscillation: the repeating motion of a wave or a material—_____________________________________________. Earthquakes cause seismic waves that produce oscillations in materials with many different frequencies. Every object has a ___________ _________ of vibration that scientists call its natural frequency. The natural frequency of a building depends on its physical characteristics, including the design and the building materials.

Frequency: _____________________ _______________________________. number of oscillations in an earthquake wave that occur each second. unit for frequency is the __________ 1 Hz = __________________. In earthquake engineering, frequency is the rate at which the top of a building sways.

Resonance: _______________________________________________ In the case of an earthquake: When the frequency of oscillations due to earthquake waves is close to that of the natural frequency of the building the motion is amplified. http://recipes.howstuffworks.com/food-facts/wine/question603.htm http://www.youtube.com/watch?v=3mclp9QmCGs

Buildings always oscillate in an earthquake. 1985 Mexico City ground shaking ____________________________________________________________. severe damage to medium-height buildings that had the same frequency as the ground shaking and resonated with it. Higher and lower buildings were hardly damaged.

Seismic sea wave: _______________ _______________________________. Tsunami: a potential destructive ocean wave created by an earthquake or other large-scale disturbance of the ocean floor.